The diva did not disclose other birth details, such as her daughter's weight or measurement. Aguilera delivered her daughter at Cedars-Sinai Medical Center in L.A. The "Just a Fool" singer's pregnancy was revealed in February, a week after Aguilera announced her engagement to Rutler, a movie producer.

Celeb Baby Names: Aston Reign Disick

The future spouses met on the 2010 set of Burlesque, Aguilera's big screen debut.

Prior to welcoming her first child with Rutler, a heavily pregnant Aguilera posed nude for V this summer. "As a woman, I'm proud to embrace my body through all stages of life, staying fearless and confident in surrendering to the unknowns the future has in store," the 33-year-old pop star told the magazine.

Aguilera is taking time off from The Voice, but she plans to return to the NBC talent series for its eighth season. She also told V that she's working on a new album, and on Aug. 11, she hit the recording studio.

"Baby girl getting first listen to what mama's been creating in the studio," she wrote on Instagram.